Patents by Inventor Bharatkumar Ravjibhai PAGHADAR

Bharatkumar Ravjibhai PAGHADAR has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • PROCESS FOR PRODUCING A BIPHENYL METALLOCENE COMPLEX
    Publication number: 20230151030
    Abstract: The invention relates to a process for preparing a boronic anhydride compound of formula (1), wherein, R1-R4 are substituents as defined in the disclosure and ‘B’ stands for the element boron. The invention also describes a process of using the boronic anhydride of formula (1), to prepare a biphenyl metallocene complex of formula (4), wherein, R1 to R10, are substituents as defined in the disclosure; and wherein ‘M’ is a transition metal element, ‘Q’ is an halide anion, and ‘P’ is the valency of the transition metal element ‘M’ and indicates the number of halide anion present. In addition, the invention further describes a process of purifying the metallocene complex of formula (4) so as to render the overall metallocene complex synthesis process environmentally sustainable as well as cost effective by minimizing waste effluents.
    Type: Application
    Filed: April 2, 2021
    Publication date: May 18, 2023
    Inventors: Sambhaji Nanasaheb CHOUGULE, Anamitra CHATTERJEE, Jaiprakash Brijlal SAINANI, Sivalingam GUNASEKARAN, Bharatkumar Ravjibhai PAGHADAR
  • Process for the preparation of 2,2?-bis-indenyl biphenyl ligands and their metallocene complexes
    Patent number: 9828447
    Abstract: The invention relates to a novel process for the preparation of 2,2?-bis indenyl biphenyl ligands of following formula (3): The invention also relates to metallocene complexes prepared using the novel process for the preparation of 2,2-bis indenyl biphenyl ligands. The invention also relates to novel intermediates used in the process for the preparation of 2,2?-bis indenyl biphenyl ligands.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: November 28, 2017
    Assignees: SAUDI BASIC INDUSTRIES CORPORATION, SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Mudubagilu Udaya Kumar, Paresh Bhagvanbhai Rasadiya, Bharatkumar Ravjibhai Paghadar, Sambhaji Nanasaheb Chougule
  • PROCESS FOR THE PREPARATION OF 2,2'-BIS-INDENYL BIPHENYL LIGANDS AND THEIR METALLOCENE COMPLEXES
    Publication number: 20160194414
    Abstract: The invention relates to a novel process for the preparation of 2,2?-bis indenyl biphenyl ligands of following formula (3): The invention also relates to metallocene complexes prepared using the novel process for the preparation of 2,2-bis indenyl biphenyl ligands. The invention also relates to novel intermediates used in the process for the preparation of 2,2?-bis indenyl biphenyl ligands.
    Type: Application
    Filed: August 19, 2014
    Publication date: July 7, 2016
    Inventors: Mudubagilu Udaya KUMAR, Paresh Bhagvanbhai RASADIYA, Bharatkumar Ravjibhai PAGHADAR, Sambhaji Nanasaheb CHOUGULE